Although S2U2 is now reached v1.20, it doesn't mean it can run perfectly on your device. Thanks to different devices produced by different vendors. So, please test it before use it everyday, especially the CallerID function.
What is S2U2?
S2U2 (Slide2Unlock2) is a simple lock/unlock application which has the iPhone style slide unlocking. It can be used as a screensaver while you don't use your device. And it's has a CallerID function (but some devices may not work, so please try it first); S2P control plugin; and volume control.